The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2021
Filed:
Jan. 14, 2020
Shanghai Avic Opto Electronics Co., Ltd., Shanghai, CN;
Wenjun Dai, Shanghai, CN;
Shanghai AVIC OPTO Electronics Co., Ltd., Shanghai, CN;
Abstract
Disclosed are a display panel, a preparation method thereof and a display device. The display panel includes a display region and a non-display region. The preparation method includes: providing a base substrate; preparing a first metal layer on a side of the base substrate; preparing a first insulation layer on a side of the first metal layer; performing a patterning process on the first insulation layer by using a mask plate to form a plurality of first via holes; preparing a passivation layer on a side of the first insulation layer; performing the patterning process on the passivation layer by using the same mask plate to form a plurality of second via holes, where a vertical projection of each of the first via holes on a plane where the base substrate is located covers a vertical projection of one of the second via holes on the plane.